Adjustments; Tilt Stop Adjustment; Miter Slot Alignment; Fence Alignment - Powermatic 74A Instruction Manual & Parts List

ADJUSTMENTS

MITER SLOT ALIGNMENT

To check the alignment of the miter slot to the blade,
raise the blade to its 0 (90 deg.) position and its maxi-
mum height. Mark one tooth with a grease pencil and
position the tooth slightly above the top edge of the
table at the front. Raise the miter gauge bar slightly
out of its slot to serve as a shoulder. Using a combi-
nation square against the side of the bar, slide the
scale over until it touches the tip of the blade and lock
scale in position, Figure 5.
FIGURE 5
Rotate the marked tooth so that it is slightly above the
table top at the rear and using the square as in front,
check whether the distance to the blade is the same.
If it is not, loosen the three (3) mounting screws that
lock the table to the cabinet and move the table to
bring the miter slot in line with the blade. The blade
should be kept centered with the slot in the table in-
sert to ensure clearance at both the 90 deg. and 45
deg. positions. After aligning, lock the table to the
cabinet by retightening the three mounting screws.

TILT STOP ADJUSTMENT

Using a combination square, check the 90 deg. (0)
and 45 deg. stops as shown in Figure 6. Adjust stop
positions if required, using the stop screws as shown.
Check the pointer at 90 deg. and readjust if required.
FIGURE 6
8

FENCE ALIGNMENT

®
See Accu-Fence manual.

MITRE GAUGE ADJUSTMENT

The mitre gauge is equipped with individually adjust-
able index stops at 90 degrees and 45 degrees right
and left. The index stops can be adjusted by tighten-
ing or loosening the three adjusting screws (A), Fig-
ure 7.
To operate the mitre gauge, loosen lock handle (B),
and move the body of the mitre gauge (C) to the de-
sired angle. The mitre gauge body is set to stop at 0
degrees and 45 degrees left or right. To move the
gauge beyond these points, the stop rod (D), must be
pulled out.
FIGURE 7
If accurate crosscutting work is to be done using the
miter gauge, check its squareness to the slot with a
combination square and readjust the stop position if
required, Figure 8.
FIGURE 8

MAIN BLADE BELT TENSIONING

The saw is equipped with a set of three matched belts
and on replacement, replace the complete set. To re-
tension the belts, loosen the cap screws on either
side of the motor bracket as shown in Figure 9, and
pivot the motor and bracket to the right. Retighten the
mounting screws.